Type-writing machine.



4 BHEETSSHEBT l.

I 4.151 371 Y 72421 012/1, ft: l L

Patented Sept. 6,1910

9 J is Y T. KNAPP. v TYPE WRITING MACHINE. APPLICATION FILED DEG.13, 1907.

Patented Sept. 6, 1910.

4 SHEETS-SHEET 4.

Uww

1 mb i /M A l a 6 r wmfi w life l gTATE T THERON L. KNAPP, 0F JVOODSTOCK, ILLINOIS, ASSIGNGR T6 THE OLIVER TYPEViRITEB COMIANY, or CHICAGO, ILLINO TYPE-WRITING MACHINE.

To all whom it may concern:

Be it known that: I, THERON L. Thinner, a citizen of the United States, and a. resident of \Voodstoch, in the county of McHen'ry and State of Illinois, have invented certain new and usefulImprovements in Typel i riting Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the acconipanying drawings, and to the letters of reference marked thereon, which form a oart of this specification.

This invention relates to improvements in typewriting machines and it embraces improvements in several features of said ma chines intended. more particularly for epplication to n'inchines of the kind known as the ()livel typewritor such shown and described in the, prior patent granted to Thomas Oliver. Number 599,863 lilarch 1st, 1 8. Some of the improvements herein deare, however applicscribed and claimed able to machines which differ in construction from said Oliver machines.

The invention consists in the matters hereinat'ter described and pointed out in the appended claims.

hi invention may be more readily understood by reference to the accompanying drawings in which,-

Figure l :1 \'l0\ partially in side elevation and mrtiallv in section of-n typo-writ ing machine embodying my invention. Fig. 2 is a view of the niachii'ie tron; beneath. Fig. 3 is a detail, vert'cal transverse section, taken on line 3--3 oi Fig. 1. Fig. ft is a. detail vertical section. tziltcii on line +l--l of Fig. 2. 5 is a dcjail, vertical section, taken on line 5 of Fig. 1'. tical section on line 6 6 of Fig. 2. J is a vertical s etion on line 4? of Fig. 6. F 8 a. view in perspective of tin iins verse, horizontal frame bar forming it part of the invention. Fig. i) is a view in perspective of one of the frame brackets 'iorniing a part of the invention.

First. referring, briefly, to the general fen tin-es of constrin-tiou in the machine il ustrated in lllt accompanying drawings, these correspo nl with the. machine shown ind prior Patent No. $99,563. and in Patent No. 834.565, granted to Cross and 1 rithtl her 30th 15.306. As shown in said (11';- the base-plate of the machine is with a horizontal, lower forward Specification of Letters Application filed December 13, 190?.

ll t; is a ver- Fig. 7

spacelie portion 5 Serial No. 486,33

' and with a rear, elevated, horizontai portion 6. The forward lower part and the rear elevated parts 5 and 6, are made integral with a degending ma rginnl base-flange 7 extending entirely around the base-plate. At the forward part of said rear elevated portion, the latter is connected at the sides of the ing machine, which type-bars are mounted the center line of the machine. One of said type bars is indicated by 10, the same being shown as mounted in supporti frame ll which attached to one of the two frame which are attached to part 6 of the base-plate;

15 indicates the universallmr oi standards 12. 12, L

the elevated, rear,

the link chino through the medium of vhich the letter spacing (.leviccs. of e niacl e are operated and which extends transversely beneath and adanted actu... .i; by all of the key-levers. Said unive ll bar eonstitntcs a part of an oscillatii'ig nnit: iihich is formed by means of the "rid universal bar, a transverse rock-shaft 16 arranged parallel with the universal bar at the front par of the machine a transverse oer 1! orranger adjacent to and at the rear of said te-closhatt lt, and tlce am 18 2t) which extend from front to rear o the nun chiiic and ri v (20111 a said i shaft it; with the bar 1? and i the universal bar.

21 iinjliczitc" the space and 22, the space-lacy levers. The suit. space-hey levers extend rcarwerilly from the space-hey hencath the lieyslcvers and the universal-lair frame, and are pivotally supported at their rear ends as hereinafter des ied. The

levers are connected Hill the universal-har frame by means of an upright base-plate with the forward lower part 5 by torni eznolovod in said Oliver t oewrit- .& x J

in two groups, located at opposite sides of the upper end of.

connecting rod 23 attached to a cross-piece 24 on the said levers and engaged with the cross-bar 17 ot' the said frame. The universal-bar is held yieldingly in its elevated position by means of an expansively acting spiral spring which is arranged vertically beneath said universal-bar and bears against the same at its upper end. The lower end of said spring supported upon a bracket 26 which is secured to and depends from the base-plate. Now referring to the features illustrated which relate more particularly to the present invention, one feature of my invention relates to the means for supporting or sustaining upon the base-plate operative parts of the machine at points adjacent to the front of the base-plate and beneath the forward ends of the kcy'levers, the supporting means illustrated inthe accompanying drawings being employed to sustain the forward end of the universal bar frame. The means illustrated for these purposes, consists of a pair of bracket-members 50, 30 which are arranged at opposite sides of the base-plate and are attached to and" extend rearwardly from the rear margin ot' the lower, horizontal, forward part- 5 of the said base-plate. Said bracket members are employed, in the construction illustrated, to afford pivotal supportt'or the rock-shaft 16 of the universal bar frame, which is arranged horizontally below the level of the key-levers near the front of the machine. Each of said bracket-members (Fig. 9) consists of a bracket portion 31 which extends rearwardly from the part 5 of the base-plate and a horizontal base portion 32 arranged at right angles to the bracket portion 31. Said horizontal base portion extends transversely of the machine and rests on the top surface of the said lower, forward part 5 of the base-plate, to which it is secured by screws or bolts. Each of the bracketmembcrs is provided at its bracket portion 31 with a screw-threaded, horizontal aperture 33 in which is inserted a scre\ -threaded pivot-stud 34 (Fig. 2). Said pivot-studs 34:, 34 are made conical at their inner ends and are adapted to engage conical recesses in the ends of the rock-shaft l6, and to thereby form the stationary parts of pivot bearings for the ends of the said rock-shaft. Set-screws 35, 35, inserted into the bracket members at right angles to the'pivot-studs, act on the latter to hold the same from movement when adjusted.

Another novel feature of my invention relates to the means for supporting from the base-plate of the machine an operative part or parts located below the keydcvers, for

ward of the universal bar.

40 2. i3 and indicates a horizontal frame-oar which is arranged transversely beneath the key-levers, and is supported rigidly from the rear elevated part ii of the base-plate. Said frame-bar has at its right-hand end an upright portion 41 which rises to the horizontal rear part 6 of the base-plate, and is bent at its upper end to form a horizontal portion which is attached to the said part 6 by a screw or bolt. At a point between its ends the said framebar 40 is provided with an integral, upwardly extending lug 42 adapted to bear at its upper end against and secured to a block 43, which is attached to and depends from the elevated part (3 of the base'plate, in the space between the two groups of key-levers. Said frame-bar is adapted to afford support for the rear ends of the space key-levers 22, Fol-this purpose it is provided, on its under side, with lugs 44, 4% to which are attached by means of screws, depending brackets 45, 4:5 to which are pivoted the rear ends of the said space-key levers.

In a machine having a base-plate made with a rear elevated part extending above the key-levers, as illustrated, a horizontal transverse frame-bar, attached to the baseplate below the key-levers'by connecting members rising from the frame-bar to the elevated part of the base-plate as described, affords a strong and rigid support for the pivots of the space key levers and may be employed .to support or sustain any other operative parts of the machine which require support atv points beneath the said key-levers.

Another novel feature included in my invention relatesto features of construction in the universal bar 15 in the portion thereof with which; the several key-levers make contact when depressed. In said universalbar are mounted a plurality of vertically ar rangedadjus'ting screws 50, 50, one of which is located beneath and in vertical alinement with each of the several key-levers. Said adjusting screws are inserted through the bar from beneath and project at their upper ends above the bar, with their said upper ends in position for contact with the lower edges of the key-levers. Said adjusting screws, being vertically adjustable in the univerSaLbar, serve as adjustable stops by which the several key-levers may be caused to act with uniform effect upon the universal bar. Associated with each adjusting screw is a set-screw 51 which is inserted through a screw-threaded aperture in the universal-bar at an angle to the adjusting screw. The set-screw 51 is adapted to bear at its inner end against the adjusting screw so as to hold the latter from any turning or shifting movement after it has been properly adjusted.

In connection with each of the two groups of key-levers, a vertically slotted guide-plate 52 is rigidly attached to the universal-bar in parallel relation thereto. In the partic- 

